A Study on Preventing Spontaneous Combustion of Residual Coal in a Coal Mine Goaf

Table 1

Density and proximate analysis of Haizi Colliery.

Density	Fixed carbon	Ash	Volatile matter	Moisture
(kg/cm^3)	(%)	(%)	(%)	(%)
1.29	47.51	5.23	35.07	11.6